000 00351nam a2200133Ia 4500
001 0000021339
005 20251012174640.0
008 s1970 uk eng c
020 _a047142594X
050 0 0 _aHD20.5
245 1 0 _aThe implementation of operations research
260 _c1970
500 _a[by Jan H.B.M. Huysmans xi,234p illus 24cm
999 _c7992
_d7992